Concatenate the names of all employees in the 'employees' table, separated by a semicolon and ordered by their IDs in descending order.
CREATE TABLE employees (id INTEGER, name VARCHAR); INSERT INTO employees (id, name) VALUES (1, 'Alice'), (2, 'Bob'), (3, 'Charlie');
```sql
SELECT STRING_AGG(name, ';') AS concatenated_names FROM employees ORDER BY id DESC;
```
```sql
SELECT STRING_AGG(name, ';') AS concatenated_names FROM employees ORDER BY id DESC;
```